Education and demonstration – Science – Astronomy
Patent
1993-05-17
1994-09-06
Mancene, Gene
Education and demonstration
Science
Astronomy
368 16, G09B 2706
Patent
active
053443250
ABSTRACT:
An automatic tracking astronomical globe comprising an annular frame disposed on the upper portion of a mount in a vertical position, an azimuth circle secured across a diameter of the annular frame in a horizontal position, and a transparent celestial globe with a concentric, internal terrestial globe, disposed concentrically within the annular frame and azimuth circle by a polar axle. A synchronous motor disposed in the mount and operating through a globe rotation drive mechanism, rotates the celestial globe at the rate of one revolution per sidereal day. A pair of solar and lunar drive mechanism are disposed in two drive boxes secured to the inner wall of the celestial globe at diametrically opposed positions, and engaged with a stationary equatorial gear formed along the equator of the terrestial globe. The solar and lunar drive mechanisms affect the rotation of a solar and lunar marker around the circle of the ecliptic of the celestial globe, at the rate of one revolution per sidereal year and sidereal month, respectively. An integral Gregorian calender and Chinese lunar calender are also provided as well as a horizon sphere enabling the determination of the horizon co-ordinates of a celestial object represented on the celestial globe.
REFERENCES:
patent: 2399365 (1946-04-01), Link
patent: 2892268 (1959-06-01), Hagner
patent: 2985969 (1961-05-01), Farquhar
patent: 4136397 (1979-01-01), Pierce
Mancene Gene
Smith Jeffrey A.
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